/******************************************************************************** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.**** This file is part of the example classes of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 as published by the Free Software Foundation** and appearing in the file LICENSE.GPL included in the packaging of** this file.  Please review the following information to ensure GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#include <QtGui>#include "window.h"Window::Window(QWidget *parent)    : QDialog(parent){    browseButton = createButton(tr("&Browse..."), SLOT(browse()));    findButton = createButton(tr("&Find"), SLOT(find()));    fileComboBox = createComboBox(tr("*"));    textComboBox = createComboBox();    directoryComboBox = createComboBox(QDir::currentPath());    fileLabel = new QLabel(tr("Named:"));    textLabel = new QLabel(tr("Containing text:"));    directoryLabel = new QLabel(tr("In directory:"));    filesFoundLabel = new QLabel;    createFilesTable();    QHBoxLayout *buttonsLayout = new QHBoxLayout;    buttonsLayout->addStretch();    buttonsLayout->addWidget(findButton);    QGridLayout *mainLayout = new QGridLayout;    mainLayout->addWidget(fileLabel, 0, 0);    mainLayout->addWidget(fileComboBox, 0, 1, 1, 2);    mainLayout->addWidget(textLabel, 1, 0);    mainLayout->addWidget(textComboBox, 1, 1, 1, 2);    mainLayout->addWidget(directoryLabel, 2, 0);    mainLayout->addWidget(directoryComboBox, 2, 1);    mainLayout->addWidget(browseButton, 2, 2);    mainLayout->addWidget(filesTable, 3, 0, 1, 3);    mainLayout->addWidget(filesFoundLabel, 4, 0);    mainLayout->addLayout(buttonsLayout, 5, 0, 1, 3);    setLayout(mainLayout);    setWindowTitle(tr("Find Files"));    resize(700, 300);}void Window::browse(){    QString directory = QFileDialog::getExistingDirectory(this,                               tr("Find Files"), QDir::currentPath());    if (!directory.isEmpty()) {        directoryComboBox->addItem(directory);        directoryComboBox->setCurrentIndex(directoryComboBox->currentIndex() + 1);    }}void Window::find(){    filesTable->setRowCount(0);    QString fileName = fileComboBox->currentText();    QString text = textComboBox->currentText();    QString path = directoryComboBox->currentText();    QDir directory = QDir(path);    QStringList files;    if (fileName.isEmpty())        fileName = "*";    files = directory.entryList(QStringList(fileName),                                QDir::Files | QDir::NoSymLinks);    if (!text.isEmpty())        files = findFiles(directory, files, text);    showFiles(directory, files);}QStringList Window::findFiles(const QDir &directory, const QStringList &files,                              const QString &text){    QProgressDialog progressDialog(this);    progressDialog.setCancelButtonText(tr("&Cancel"));    progressDialog.setRange(0, files.size());    progressDialog.setWindowTitle(tr("Find Files"));    QStringList foundFiles;    for (int i = 0; i < files.size(); ++i) {        progressDialog.setValue(i);        progressDialog.setLabelText(tr("Searching file number %1 of %2...")                                    .arg(i).arg(files.size()));        qApp->processEvents();        if (progressDialog.wasCanceled())            break;        QFile file(directory.absoluteFilePath(files[i]));        if (file.open(QIODevice::ReadOnly)) {            QString line;            QTextStream in(&file);            while (!in.atEnd()) {                if (progressDialog.wasCanceled())                    break;                line = in.readLine();                if (line.contains(text)) {                    foundFiles << files[i];                    break;                }            }        }    }    return foundFiles;}void Window::showFiles(const QDir &directory, const QStringList &files){    for (int i = 0; i < files.size(); ++i) {        QFile file(directory.absoluteFilePath(files[i]));        qint64 size = QFileInfo(file).size();        QTableWidgetItem *fileNameItem = new QTableWidgetItem(files[i]);        fileNameItem->setFlags(Qt::ItemIsEnabled);        QTableWidgetItem *sizeItem = new QTableWidgetItem(tr("%1 KB")                                             .arg(int((size + 1023) / 1024)));        sizeItem->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);        sizeItem->setFlags(Qt::ItemIsEnabled);        int row = filesTable->rowCount();        filesTable->insertRow(row);        filesTable->setItem(row, 0, fileNameItem);        filesTable->setItem(row, 1, sizeItem);    }    filesFoundLabel->setText(tr("%1 file(s) found").arg(files.size()));}QPushButton *Window::createButton(const QString &text, const char *member){    QPushButton *button = new QPushButton(text);    connect(button, SIGNAL(clicked()), this, member);    return button;}QComboBox *Window::createComboBox(const QString &text){    QComboBox *comboBox = new QComboBox;    comboBox->setEditable(true);    comboBox->addItem(text);    comboBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);    return comboBox;}void Window::createFilesTable(){    filesTable = new QTableWidget(0, 2);    QStringList labels;    labels << tr("File Name") << tr("Size");    filesTable->setHorizontalHeaderLabels(labels);    filesTable->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);    filesTable->verticalHeader()->hide();    filesTable->setShowGrid(false);}